Investigation of lichen based green synthesis of silver nanoparticles with response surface methodology

Nuray Yıldız, Çağlar Ateş, Mehmet Yılmaz, Dürdane Demir, Atila Yıldız, Ayla Çalımlı
2014 Green Processing and Synthesis  
In this study, silver (Ag) nanoparticles were successfully biosynthesized from AgNO 3 through a simple green route using the lichen extract [Cetraria islandica (L) Ach] as a reducing and stabilizing agent. The mean sizes of spherical Ag nanoparticles with diameters ranging from 5 nm to 29 nm were obtained at different reaction conditions. The nanoparticles were characterized using transmission electron microscopy (TEM), energy dispersive X-ray (EDX), ultraviolet-visible (UV-VIS) and Fourier
more » ... IS) and Fourier transform infrared spectroscopy (FTIR) techniques. Response surface methodology (RSM) was used to investigate the effects of temperature, reaction time and AgNO 3 /lichen ratio on green synthesis of Ag nanoparticles. The results showed that the increase in reaction time and AgNO 3 / lichen ratio caused a decrease of particle size and the increase in temperature resulted in bigger particles.
doi:10.1515/gps-2014-0024 fatcat:a6hmo62i6nhe3dgnqlx5a7uire